Thanks for all the input on the jetting topick .What i woold like to know is wat is the worst that kan happen if you use 158 on 4410 exept the feul consumption. Is there a possisibility tha the motor could get damaged because i have done 50 hours on 158s and so far it performs well and have no splut...

HELP PLEAS I nead help on the rite jets on a 503 ROTEXfor the ALT that we are on it should be the same as in JBURG we are on 4410ft . We baught a trike from the coast and would like to know wat jetting to use. I was told to use 150 for the main jets but they make the motor start very hard.

I bought a vortex standard 220 looks good but dissapointed in the info they gave me . They informed me that the radio would fit to the BUZZC and i also informed them on wat radio i had before witch was a icom ICA20. I stay 600km from JB and is verry INCONVENIENT to send it all the way back.