After about an hour straight of driving today, the brakes on the 40 seem incredibly weak. Needed serious down-shiftage to stop. The clutch rubber is dry rotted and that's the reason it's weak shifting... But the brake master looks really clean, holds fluid, etc. But the fxxxer is weak ONLY after it gets hot, etc. Just wondering is the wheel cylinders could get old/hot and be weak, etc. Or the brake master/booster? Brake guys? Get on it. Thanks.