I was tempted to post this in general car chat for a larger number of views, but it's a question more suitable for this forum.

The manual boost controller that came with my car is dead, and I'm sick of 8 psi. I'm mostly done building a manual boost controller with some parts from the bike shop and HDPE (thanks, kenny, for getting me the hook-up with them ). The only thing I'm having difficulty finding is the spring. Where in Tampa do you go to buy springs? I need one of exactly 3/16" diameter, and if they're not too expensive I've going to buy several of different lengths and spring rates. Nobody I've asked can give me a good answer to this question, please help me out.