Just added full LP playback

The cartridge may be riding too high in the rear (VTA).

If so, you then would lower the tonearm height.

An easy test for this (if you don't have a thicker mat) is to place an an LP under the one you are playing, which effectively lowers the rear of the cartridge when playing the record.

Probably best to check/reset the tracking force if you have a scale.

Adjusting the arm height on my old SME arm is a PITA so I use a second "shim" mat for super thin LP's (which are typically 70's imports from Europe).

Not a big deal as they are but a very small percentage of my LP library.

DeKay

Frozentundra, this should be an easy fix. The Hana's have certain characteristics that you need to understand to get them to operate at their best. First is that they are not the best trackers. Rated at 70um, this is not terrible but not great. Tracking will improve as the cartridge loosens up a bit. I would run this cartridge at 2.1 or 2.2 grams. Next is these are very stiff cartridges. Compliance is rated at 10 X 10 (-6) cm/dyne. Your arm is too light for this cartridge which is killing your bass and adding to your tracking problems. Fortunately the fix is easy. Soundsmith sells a set of cartridge screws of various masses. https://sound-smith.com/accessories/ez-mount-cartridge-screws
Start with the lightest ones and work your way up. The best way to do this is to get at test record with a resonance track on it. You want to get down as close to 8 Hz as you can without going under. The more weight you add the lower the resonance frequency will go. Don't forget to watch your VTF. I would shoot for 2.1 gms. If the sibilance stops stay there. At 100 hours the tracking will be as good as it is going to get and it should be good enough to cruise through all but the silliest groove velocities. 
Changing VTA will effect your high frequency performance more so with fine line styli like the shibata you have. If you raise or lower the tonearm too far in either direction you will roll off the high end as the stylus will no longer fit into the highest frequency modulations. It will just ride over the top of them and this is in either direction but going up too far can get very dangerous with the really sharp profiles like the Gyger S and Replicant 100. These can dig right into the vinyl like a chisel if you raise the back of the arm too far. For someone without a USB microscope (you can see and measure the SRA) best is always to keep the arm perfectly parallel to the record. By all means add a record and see if you can hear a difference. In the old days with changers we use to stack 10 records!
I always set mine with a USB microscope to 92 degrees and forget about it. 

Mike 

First fix VTA, as DeKay is probably right. As you lower it down the sound will become more and more balanced. You will know you have gone too far when you start to lose top end detail and the bass and overall sound becomes too warm and round.

Then fine tune VTF. For this you need to stay within the manufacturers range but anything within that range is fair game. So go with what sounds best. This will not be as big a difference as VTA but every little bit....

Finally, experiment with loading. High values are called low load, low values are high load. The more you load a cartridge the more you lower the top end compared to the bass. The difference can be huge. But do VTA and VTF first.