I noticed today during an extended warmup that the front cylinder was running hotter than the rear cylinder. I couldnt touch the front but could lay my hand on the rear jug with no harm of burning my hand.

I do not have a IR Thermo to really measure temps well once it's been run, but I figured that during warm up they would both at least share similiar temps. Does this indicate a problem? Exhaust leak maybe ?

 

The front cylinder runs lean compared to the rear. A lean cylinder runs hotter than a rich one. It is normal.