I wouldn’t bend trim or modify your Classic 60 or you’ll just hurt it’s value. If you don’t have the skills, no disrespect, have Chris at VH Audio or someone else make you some jumpers so you can use other heavier cables. Cardas, Audio Quest and others make spades that work just fine on your amp. The dividers/fins are plastic I recall so they’re not going to bend easily and again it’s a classic amp and I wouldn’t mess it up.
