Hello
previously had a no spark (thanks forum) and have progressed to a no start .
I have not had this bike running. Motor comes from a 89 kick stark. Motor has a newish piston and top end. (previous owner claims very low hours put on since rebuild}.
Bike was stripped down and combined with my old 85 xt600 to get one solid bike.
Ok I can't get it started and its a beast to kick over.
I have not done a compression test yet but based on the receipts, old piston and the kick start resistance I believe the compression should be good for it to start and break my leg.
I have spark
carb is getting fuel at least to float bowl
carb has been cleaned with new o rings and gaskets. A/F is at 2 turns out
kicked for awhile with choke out no throttle -nothing
air filter removed short spray starter fluid- nothing
kicked a bunch more- nothing
rolled down steep hill a bunch of times - one or twice it tried to turn over it seemed. lights brightened looked promising but nothing more. Got fed up and went home.

Plug was dry. (pulled before the hill jump)
Plug is new and gapped
I had the air filter out. (maybe too lean to start?)
no backfire no popping
no gas smell
kill switch on run
feels like its not getting fuel but I was hoping the stater fluid would of at least kick something over.

Advice please
Greg