Does anyone use a Mopar style master cylinder on their race car?

My Wilwood on Jag leaks out the caps after each pass. You would think the caps would be made to seal better based on what they are used on.

 

Wow, that’s sucks. You would think what you pay for a wilwood master cylinder that would be the last thing that would leak.

 

There are several people on Yellow Bullet that have the same situation..That probably is the biggest reason I decided against using one of the Mopar style ones on my car..

 

Rumor has it, that Buck folk use MOPAR parts, to slow their cars down...