Your Head Gasket giving up was due to No Fault of the Dobeck product.
This would be like saying the tranny won't shif correctly after I put on a new toe rubber on the shift fork...
OR I filled the gas tank with 100 octane etc etc
If you smelled raw gas , was it before
the head gasket leak or after
Smelling After would be because the cylinder was leaking it out Before gas fumes had a chance to burn.
Has anybody tried to TIGHTEN the head bolts (a No No) or any modifications before the Dobeck was installed?
A friend of mine would always try to tighten the bolts on his HD
and the heads gave way under the process
I have NOT found ONE Bolt or Nut loose on my 09 since new...
What did the shop find about the gasket leak?
I would think it just let go IF nothing has been done to the bike on repair or replacement OR played with...