The starting problems with my three active Brison 3.2s have been solved. It turns out that I had the low speed needle valve much too lean. I was able turn it out 1/16 of a turn or more and the engines started up as expected. The idle was not effected. This is surprising because the engines always idled well. I am now putting much more force into my propping. I was getting pretty casual with it as time went on. I tried a heavy reinforced leather glove but quickly abandoned it for the chicken stick after the first whack. I’ll let the stick suffer. I can not say for sure if changing the four cell battery pack to a five cell was beneficial. The old packs were over two years old and had lost about 20% of their capacity so new packs were necessary anyway. Thanks for the inputs. They were very helpful. Dan.