Update on my idle problem
If this link works , you will see a skirtless piston which was found
packed into the ports and conn rod....
Discovered someone previously must have used starting aid and
melted the Mag seal and blown the pto seal out and also the
the inspection door to inj pump, and it was not in the sled.
It took about 250km and 3 winters and still didn't stop except I
decided to check the spark plugs and discovered one stuffed with
Almn....It never ceased to run and worked well except idle..lol.
the piston pin had eaten 3/16" into wall as well....
Found a SR540 engine and rebuilt it ,,,seems to run well now !
Tough engine as even the crank bearings were packed in piston
powder and never seized..