I finally got my 383 running and driving this week. I'm having some problems with leaks that I'd like some opinions on.

First, I've put about 100 miles on it the last 3 days for break in. Theres not a single drip of coolant any where. I get to work 3 days in a row, check for leaks and don't see anything. 30 minutes later i get a call saying theres antifreeze everywhere. It's leaking from the petcock which seems to be stripped because it never gets tight. The question is why is this only happeneing when i drive to work? (doesnt happen when i drive home) MAybe building up too much pressure? I'm going to replace the pet **** even tho the radiator is only a year old, but will this fix my problem? I never had this happen with the 305.

Second is a trans leak from the vss housing (t5). Where can I get a new setup? Nobody seems to have it except for the cable driven one. Are they the same between the 700r4 and the t5?