[doocatiboy]

Bike sat a few weeks after running for a few thousand miles (since
I took ownership) w.no problems. Go to start it and there's a robust
click sound, kind of similar to a loose battery connection but
much louder and stronger.

I know for certain my problem is not battery or wire related
If I continually thumb the starter the + starter lead overheats
and actually melts the rubber boot. Not cool. Something is restraining
the starter - or a gear on which it acts - and this is why I believe
something is seizing. Not sure if related to the sprag (which I
don't even know is!) or the flywheel or what.

Tried roll starting in gears 1-3 to no avail. All this would do is
lock the rear at clutch pop to a skidding halt. I have roll started
this bike many times prior with no problem so something wasn't allowing
roll starting now. Even tried jumping it directly to the starter to
eliminate anything higher up in the chain (e.g. solenoid, etc).

Here's how I got it started, thinking something is seized and
needing to be unseized, given no tools or shop access:
-1st gear, grab handlebar and grab rail
-roll bike firmly back and forth a few times until the rear wheel
turns (a la turning manually to find TDC when doing valves). This
required some downward pressure on the rear.
-now she started under normal conditions, with the seizure
evidently freed

Bike subsequently starts fine and behaves during errand running on
same day.

Any thoughts/ideas as to what's seizing on me, and why? Is it
clutch related? Flywheel? Sprag? Hydro-locked?

Thanks for your help.