hello all, I was wondering if anyone has experience with the .50 os max sx motor having a hard start issue, just got the conversion kit for the nexus, was referred by the local hobby store to get the .50 vs. the .46 due to the .46 being a problem engine, so everything is installed though I'm using the old cooling fan that was on the .32 sx due the the fact the .50 has a 1/4" washer that does not let me screw on the nut to hold the cooling fan. When I try to start the engine is does not want to turn, what is strange is when I remove the glow plug, it turns fine (with the starter, and this is a high torque starter), at this point I am lost and not sure what is going on, any help is much appreciated guys, thx in advance.

get a new cooling fan that was made for the conversion