Tightening binding posts problem

use pliers or get the lug nut to tie them with wrench.
i also used to have the same problem with Creek amp where I couldn't tie binding posts strong and once they shout-out the output stage so i believe such remodeling or installing different high-quality binding posts is worth.

I've had great results using an Audioquest Speaker Binding Post Wrench. $9.95 from most retailers.
Happy listening.....Erik

I use an appropriately sized socket (without the wrench) to hand tighten.

In addition, where the speaker cables exit the spade, I will point the cables at about the 4 o'clock position (instead of straight down at the 6 o'clock position). As I hand tighten using the socket, I'll using the other hand to turn the spades/cables toward the 6 o'clock position simultaneously.

This method seems to work quite well at providing a very snug connection between spade and binding post.

-IMO

I had the same problem with binding posts that were plastic sleeve over metal lug with a burr that seats in the plastic. Over time, changing cables and tightening stripped the plastic over the metal and I had to replace them with all metal binding posts. Michael Percy has a good variety.

I'll second Creeper's recommendation.