little help please fellas

im slowly picking thru all the pages. i gave it a proper run yesterday for a few mins, till what i thought was the pinion working loose and slipping on the engines shaft.

But it acutally clean stripped the spur gear. Also the slipper hub melted to the spur on the outer side of the clutch. The clutch spring got that hot it had turned blue.

Now... i had the clutch slipping a fair bit... probably for the first 6foot of take off. I thought i had the pinion adjusted correctly, but stripping the spur doesnt bother me... it the heat and melting that i need to know how to stop it.

It is basically a std 4 x 4 kit. Running a MMP, Tekin 550 4.5 motor and genuine Associated 12T pinion. I was also using the 32P spur.

Hints? Tips? Suggestions? fixs?

Ive already ordered new slipper pads and V2 vented slipper hub.