well...like i said in a post a while back....i bought the booster machine set about a week ago...but i couldn't find a 4 ch. controller at any of the shops around town(i'm too impatient to order online)...well..i found a controller today and hooked it all up...i'm wondering if anyone else has come across the same problems that i have with the booster kit......it came with a 2.2 motor...i noticed a bit of stuttering with every engine i put in..1.0-2.2- and a 2.6.......i currently have the 2.6 in there...and it works alright....i noticed that when the room was darker(right at dusk)...i literally had to have the antenna about 3 inches from the car for it tro run smoothly...later on that night after i had turned on all the room light and in the same spot i was in before..the car rode fine..no stuttering...smooth even turns...i've also read that the 4ch controller has a crappy range....are there any mods i should do?....i alreadyswitched the car antenna to come out of the hood........it also seems a bit slow when driving in normal mode....the 2.6 is still good when going in slow..and it works out just fine when you boost..........when i put a 1.0 engine in there to experiment....it was painfully slow....anyways...anybody got some mods..or know of anything i should do or be prepared for with my booster?