i have had the resonator pipe on my maxx for 3 years and have never had a problem with it. i have the stinger drilled out, otherwise it's stock and works great. what motor are you running ?
i just don't use this anymore, looks good on the shelf, but someone should be flying it! brand new insane 180 motors, aluminum upper and lower heads, new flybar, comes with stock transmitter, 2 lipo batteries body is almost brand new. one small dent in window of canopy. grommets have been...
i never balanced the blades on my micro's. only on my CP blade. save your cash. you can do the same thing with two glasses. put your blades together, set them on top of two glasses, if one end is lower than the other, you can add small amounts of tape to balance them out.
i picked them up off ebay..china but got them for a good price
http://www.ebay.com/itm/4PCS-12mm-Hub-Off-road-Wheel-Rim-Tires-w-Foam-1-10-HSP-Rally-RC-Car-Blue-70013-/360874153724?pt=Radio_Control_Parts_Accessories&hash=item5405c696fc