thanks for getting the info for me, i dont intend to keep the chrome wheels!! manythanks Alex !!!!!!!!!!!!!!!!!
They won't stay chrome for long
you leave it running, when u first start it up runnit around to warm it up then start to ajust the needles. when you have ajusted the needles run it around to get the engine used to the settings, keep doing this until you are happy with the proformance. hope i have helped, if you need anything else PM me.
I hold the car by the tail or put it on a box if I remembered one and treat it like any 2 stroke bike I owned.
Start it.
Tap in throttle occasionally for the first 10-20 seconds or so until the idle stabilises. (Basically if/when the revs fall to stall territory, give it a blip and wait)
Then starting increasing how far you blip. At first it will sound like it's in pain as soon as you give it 1/4 throttle, idle it again for a few seconds and repeat, increasing the peak throttle of each blip, release each time it strains.
You'll start to hear it warm up, like you warm up in the morning. Giving it too much too soon and it will sound rough and miss a lot.
Eventually when it will take full throttle and the revs get up, STOP, put the buggy on the ground. It's warmed up. Rev'ing it any more will just risk you damaging your tyres or driveshafts etc. Spinning them unloaded to max RPM can't be good for them. I popped a tyre off doing this.... it was starting to go anyway. Also the balance of your wheels and tyres has to be spot on of the buggy will start to pull itself to pieces. You do NOT want to be hit in the face by anything that breaks and comes off!
To the original post, I find the Vapor .28 probably over powered at low speed and is begging for a 2 speed box at top end. I also found the tail was very loose under power at first, but it quickly moved the other way and the front was too loose off road. I expect the grease they put in the diffs became lighter as it broke in. I put 10,000wt diff oil in the centre diff

Cause I like an oversteery car, I hate understeer with a passion. With this setup you need good throttle control and plenty of Expo and you can drift wide circles on dry tarmac with the spike wheels.... or do donuts on a dime until the gyroscopic effects flip the buggy over.
The inital acceleration in a straight line is frighening. I took ages lining up on one of the first big jumps I did and was only about 4 foot from the ramp when I was happy enough to give it full whack. The thing must have hit 20 mph before the top of the BMW table top jump and instead of landing on the other side it cleared a good 5 foot over the jump and landed a good 6 foot beyond it.
(Assides: I had a 50cc 2 stroke bike that the rings where going in, so i leaked oil into the cylinder when it was cold. Best way to get rip of the blue smoke was to give it WOT on the stand and let it burn it off and warm up! Very nasty I was to that engine, but it was very nasty to me and deserved no respect!