Hi All i have had around 8/9 FEJ models of one sort or another and have written reviews for the jet mag R C J I for most of them,in the early days there were problems with air cylinders,retracts but most of these issues have been resolved,my AT3 which i flew at jet power meet in germany last year has now got 80 flights on it,it has had no problems from the word go and has never let me down in any way,it still has the orignal exhaust duct,i have just got the new 1/4 scale Hawk and they are now using carbon in high stress areas,the model looks fantastic and when you consider that you get every thing with the model ie exhaust duct,tanks, retracks, oleos, wheels,air kit etc the price compared to every thing else on the market is very good value,yes there might be an issue or two to sort but there after sales service is second to none.Any problems that i have had have been sorted with replacement parts no questions asked,regards Keith