Hi Everyone, I used to fly models a couple of years back, and am in the process of getting back into it. Went out, bought myself a new trainer, the lot. Anyway, the Engine I bought came highly recommended by my local model shop, it's an Evolution Engines .46 I put the model together, did my pre-flight checks, and took to the skies. Sounds good so far.... Problem! The engine won't seem to tune up for me properly. I have dont the usual, screwed in the "top end" all the way, brought it out a cuple of turns, started the engine, brought it to full speed, leaned the top end, to just before the engine starts to die away, then went back a couple of clicks. Problem is that, no matter how many times I reddjust it, and by how little or how much, I cannot get the engine to run properly. Every time I leave it idle (Which it does quite happily) then advance to full throttle, it dies. Occasionally is splutters a couple of times before it dies, other times it just quits, regardless of whether I have made tuning adjustments or not. I had never heard of Evolution Engines, and think they may have come alone, in my absence. I wouldnt normally buy an engine I had never heard of, but the guy in the shop praised them so highly.... I went back to him a few days later, to get some spare glow plugs, which he didnt have in stock, and he instead sold me OS-3 plugs, saying that they would do fine. I removed the plug from my Evolution, and discovered that it is a completely different plug, the Evolution is a long reach plug, whereas the OS plug is a standard length. It seems to me, from what little I remember about these things, that obviously this shorter plug can't do the same job as the longer one. This made me wonder about this model shop's knowledge of their products, and in turn as to my wisdom in buying this engine. Sorry for going on, just wanted to fill in as much detail as I could, to save time of people replying, and asking. If I have forgotten anything, please do ask. If you can offer me any advice, or help on this matter, I would be most grateful.