I mostly have partscasters, teles and strats. all are set up pretty much identical. but some i have are too 'stiff'. Bending of the strings is ruff but doable.. Some i have play liek butter. Guy i know just last year got his dream Les Paul/ rig etc.. Finally got to play it and to me it was hard as hell to play, almost impossible.. he likes it but i swear he doesnt see it..He isfighting it.. Recently here a guy was selling a fender mexican cab. neck. 1st time i saw anyone saying a neck is real stiff to play. all the guitars have 10's, set up nicely, frets polished, some are leveled etc.. thinkng about this for too long. what am i missing,please/?