I am very glad to have flown the UL Power 390is for the last few years as it has been a massive learning curve that has ended well. The 160hp engine is now being pulled off, cleaned up, pickled, and put up for sale to a responsible new owner. With a top end overhaul and 3 angle valve job, this one will make someone very happy. The new 520is arrives tomorrow and I'm excited to see my climb performance thank me :)