I have a briggs and stratton 13.5 hp engine (XR model). I removed the throttle control cable and would like to control the throttle with the lever mounted on the engine. Every time I try and move the lever to full throttle, the lever returns to low throttle. Is it the springs attached that it bringing it back to low throttle? If so, would it create any problem if I removed the springs and would it stay at full throttle on it own at that point? Thanks