Hard to say, since it's hard for you to describe to me (and us) how "squishy" something is, and have us picture the same resistance. It needs to be firm, but not hard. Any 'give' in the 'tyre' material needs to spring back, -so if you squeeze it in, it should not stay 'dinged', but should be reasonably resilient.
I've just finished looking at an MTR-90 that needs a new roller. (It's a pinch-rollerless transport, so the case is slightly different, but it does have a rubber-grippy-type roller, which in the case of the MTR-90 and MTR-100 are the capstan rollers... the ACES/Studio Magnetics line used hard metal capstans, and a rubber pinch roller that force the tape to bite on the hard metal...)
There's a lot of influencing factors that makes tape skew. -Out-of-true guides, rollers, capstan, swing arms and pinch rollers are principal culprits. -I forget which approach the ACES models took in order to address this issue, but different manufacturers do different things. -The most adjustable machine that I ever saw was the Lyrec TR532/Tr533 series. EVERY roller, every guide, every swing arm, the capstan and the pinch roller were ALL mounted on gimbal bases. There were three grub-screws set into the pase of the gimbal, at 120