I found the sweet spot but it's 5ft off the floor

More setup info would be nice.....I too have 1.6s, and think as shipped they are a little beamy.
My first reaction would be to flip 'em around and listen to the OTHER side of the speaker...the side that you can't see the mylar from. That's right, put the connector/fuse side FACING the listener. At the same time, experiment with tweeter in/out. Make sure you have enough room in back of the speaker, too. Most like at least 5 feet for rear wave time reasons.
Also, are your panels straight up or 'tilted' with the spacers? Try 'em straight up, if tilted. Lay the panel face down, flat on a large table to do so. That'll take the stress of the stand screws.

When you get them exactly where you like them, get out the long tape measure. Measure from the side stiles to the wall. Measure inside between 'em. Measure side clearence to the walls. Write it all down.

Hi, Have you tried tilting the speakers forward?

Randy

Rac,
Maggies are shipped with tilting spacers. IF the speakers in question have the little nylong spacers installed on the bottom screws of the stands, that tips 'em back. Some owners like them tipped back, others like myself, go with straight up/dn.

In general, I've never heard of tilting them forward. You will start getting floor reflection problems, which depending on ceiling height and IF they are indeed tilted back, may actually be the issue.....ceiling bounce.