Okay guys... time for some explanation please.
I was under the imprssion that the "incidence" or angle of the engine was not critical. (my first jet....) Please explain the theroy of what you're all speaking about here with the engine mounting rails.
I didnt set a thrust line. I simply mounted the turbine, lined up the tail pipe centered on the engine and set things in place. My tail pipe extends beyond the aft bulkhead by the prescibed 10mm.
Will an incidence + or - have an effect on the pitch of the plane based on power in flight?

I have 15 or so flight on my Vipor. All very good enjoyable flights.... except the last flame out... another story.. but all ended well with a perfect touchdown and roll out to my feet! (i'd rather be lucky than good) and lucky i was! So, all being good in my opinion, am I simply overlooking a problem that my be present through not knowing how it should be? Ignorance is not always bliss!

Thanks for any advice to help me advance.

Matt-C