I ride on a trainer. i am using a pair of bib shorts I bought 2 years ago. I'd say I put 10-12 hours a week on those two pair of shorts.

Anyway here recently, I get a lot of heat and a rash on my under carriage. Body glide doesn't help, This ain't like chaffing.

It seems like a heat rash and goes away when I get off the bike, but it makes for an almost tearful ride about 30 minutes in.

Nothing has changed. Do you think new shorts will solve this problem?