Jt - I contacted H9 on your post because I just bought the plane -Interesting responce "thanks for your email , we did not hear of any problems with the firewall busting loose "

I had sent them your post by email .I wanted a respone that was honest and would at leaste give advice like " examine the model if you feel it needs to be reinforced then apply fiberglass to the inside of the firewall or somethnig like that .

I will keep my results posted , the plane looks great and outside of your problems I did hear about the p51 having similar firewall problemes. Other modelers commented that they reinforce all ARF firwalls before flying