hard engine starting

I don't think you have any issue at all. You just need to adjust your cold starting technique, like MOPAROFFICIAL said. If you have no choke, you just need to run the fuel pump for a few seconds to make sure the fuel bowls are filled, give it one slow full throttle push on the accelerator (half throttle if running the bigger 50cc accelerator pumps), let throttle return to closed/idle position, then hold the throttle somewhere around 1/8 to 1/4 open and crank it. With your higher compression, you may need a little less initial squirt before cranking, but try it and see. I use this procedure on my small block, although I give it two or three full accelerator pump shots because I know mine likes that. If I don't it will usually stall, then I have restart it the same way, starting over. Once it warm, no throttle input required. Don't worry about fuel wash at this level. Non issue.