I'm having a symptom in my '96 GTS (all stock) that I can't figure out - it seems like vapor lock, but I haven't been able to find much info on it with Vipers (doesn't seem common).

After driving, if it's warm out (~80 degrees and up maybe?) and I park the car for an extended period (more than 30-60 minutes), it will struggle to start. It will always turn over eventually and if I give it some gas it will fire more quickly after a few cranks & sputters. It's definitely temperature sensitive as it doesn't happen in cool weather or in the garage no matter how long it sits. And, if I park to briefly run into a store or something, it'll fire fine - it's only after sitting for 30+ minutes when it's warm/hot outside.

I don't think it's a check valve issue because if the temp outside is low, it doesn't happen (and it didn't happen after sitting over the winter or when I have it parked in the garage for any length of time - fires right up immediately after sitting for a week or 3 months).

Car runs great otherwise. Anyone else have similar symptoms/experience?