I have a SCAG Model STC52V-24HN with a Honda GXV670 TAF2 engine that has a number of issues including a broken connecting rod. I bought a new Honda GXV690 TAF2 as a replacement. Everything bolted in nicely except I cannot get the wiring to function correctly. I am re-using the SCAG harness adapter for the old engine and it seems like the connections to the new engine are a match. However, the engine cranks but I am not getting any spark (i.e., smell of gas and plugs have gas on them when I inspect them.) I am thinking the issue is the wiring adapter? Any thoughts on how to fix this issue would be greatly appreciated.