A bit of a problem...

In the last 3 races I wasnt doing as well as I was before I was always getting 3rd and 4th I have one of the best parts in the league so when the first race came when I went down I spyed on basicly all the teams that were now beating me and my parts are 50% better then theres why is this?

You ran intermediates on a full wet track.

I get your problem, the best reason is that they are simply a higher level that you and their drivers are a higher level than yours 

One of your drivers has 70% health - other has 15%. Lol. You ever tried driving an F1 car when tired?

Oh thanks Guys so this means I need to work on my health.

Lol Jaap

I second that lol Edwin.  Driving a Formula 1 car tired is probably similar to driving your every day car.  It's rather hard sometimes, depending on how far you're driving, and the weather conditions, among other things.  I know that from personal experience.

None the less the question was answered. He did run intermediates on a full wet track.

Yeah the drop off was quite significant from Intermediates to Wets in my Belgium race in my 1st season in iGP.

If your times are dropping off rapidly, pit and switch to Wets, while trying to keep a good strategy.

No, you need to work on your drivers; health.