kick it like it owes you money and it will be fine and for Gods Sakes stop using the freakin clutch!!!!!!!!!!!!!!!!
Learn how to shift without the clutch and you will have no problems at all.
These transmissions are designed to be used that way just like my buddies Sand Car transaxle is, constant mesh.
He runs a 800HP big block and I never use the clutch while driving that sand car, you just barely let off the throttle and shift it into the next gear and then back on the gas.