After 10+ years I have finally had my Petter M Handyman running at shows again The only issue I am facing now is, before I restored the Petter she must of had parts from a Petter Light Set added onto her, from the looks of original red paint and some green. She runs VERY fast with no load, I presume the Governor springs are too strong and cause the engine to keep a fast rpm, on a trolly this engine will bounce and vibrate. Will adding weaker springs slow her down? I am looking for springs made for a Petter M that keep her steady and slow at shows with no load put onto the engine. Thank you in advance to anyone who can help.