Hi Stuart I have an Alroh Imp as well. Never had that problem at least not yet. I would try mounting the blades in one of the holes closer to the centre. Mine are near new and mounted on the second hole out from the centre, with the spacers both on the same side. If that does not work try closer to the end, or the spacers on alternate sides. A lot of experienced helpful people on this site so someone may be able to give you the correct answer. I am hoping while they are at it they can help me with mine. The entire cutter bar came off. It is a keyed shaft but for the life of me I cannot work out what holds it on. Inside the cutter bar there is a sleeve that is split the entire length making a keyway. I put it back together with a B&S key (wrong key I Know) gave it a few taps, worked for about a minute before it came off again, didn't harm the key. Any suggestions would be helpful. Thanks Byomarimba
If I can get a large enough hammer it will run for awhile just trying to get away from me