Well they didnt really give a reason, to quote the person on the phone " ooh klotz i wouldnt run that in anything ". Sure is funny that every shop that should carry 2 stroke oil carries klotz, but none of them carry amsoil.
I'am also having a hard time mixing oil @ a 100:1 ratio. That just aint much oil!!! I have run my ZDZ's @ 50:1 on klotz for 2 years now. I have taken one of them apart just to take a look, and it still looked new inside with 150 flights on the engine. Not much carbon build either.
On the other hand i have a hard time going against what the manfacture says to put in there engine. They know it better than i do. RC showcase says to use any quaility syntehtic oil and that klotz was a top notch oil.

I just cant deciede what to do. I will read the link above and see if can draw a conclusion from that.... Thanks for all the input guys

Chad