sort of, i had to set the idle without the throttle attached (engine was not running, set with the idle screw about one full turn in from fully open with about 2 - 3mm clearance) then i had to reposition the throttle arm thingy (not the cable attached to the servo but the actual throttle lever on the carbie), by this time i had reattached the cable. by doing this i ended up with alot more room to work on adjusting the throttle arm and brake arm, just keep on adjusting these arms until you can apply the brake and the throttle cable won't pull back.
this took me ages to work out and every car is different so use my information as a guide only. but if you have a smartech car with a 15 engine you should be pretty right!
if you have any more troubles i am more than happy to help cause i know quite a bit about these cars and yes getting spares for the smartech cars isn't easy but if you hassle your LHS to find a supplier (hey it's his job) you can get any part you need and when you get them going properly (which can sometimes be a hassle) they go as quick if not quicker than alot of name brand cars. my top speed is around 100 kmh (63mph).