Thanks for all your help but guess what - I found a fix for the stiff foot pedal problem.
There is a bracket with round handle for trolling motor height adjustment. There are two worm gear hose clamps - one above and one below the clamp. The one above can be tightened and not affect the turning of the motor seeing as how it's not around the shaft that does connect to it. The one below, around the shaft, was too tight and caused the foot pedal to be stiff when making direction changes.
I loosened it and that solved the problem.
Fortunately the order for a new t.m. that I made on Amazon at 2 am but canceled at 9:30 am., went through and I was refunded the amount paid
Thanks again. At least I know how to get the measurement if another tm one is needed. Trolling motors last a long time so doubtful I'll need a new one.