My persistance in hovering, thats what changed. At the time I wrote that, I was not much used to the airplane so I would hover only for a few seconds and the 55AX was able to hover that time. I still does hover for a few seconds, but when I persist, it stalls out. Further, I landed hard and broke my LG sometime back. When I reinforced it, I added additional ply above the LG Block and 10mmx25mm birch wood below the LG in two rows along the fuse width with the 25mm pointing towards the LG. I also added a lot of ply and tristock along the side walls of the fue to make it stiffer so that it could take harder landings.

It worked- in the week after the repair I had a deadstick and with no where to go and no air speed and pointing downwind, I landed in area with a lot of rubble. It threw up so much dust, the others thought I had totalled it. But there was no damage whatsoever, just a very dusty airplane. A slower landing in the same gravel broke the MUCH stronged LG Block on my colleague's Phoenix Yak 60" (with a 120ax, so it was heavier, it stalled at head height with no engine)

Probably I have added some weight or may be I am having engine problems. Engine problems cant be diagnosed on the net, my mentor and some other members at my club seem to have given up. So I am better of installing an engine that I know works well instead of extending the 2 month long trial-&-error session. Will replace the piston and liner in that engine later

I have the following lightening plans to help reduce the weight and hence wing loading.

1) Since the 91 4c is a big engine, I will be using Dubro antivive beam mounts to lessen the wear on the airframe. I will be using the 50-75 2c variety as that is the lighter (and I have it at hand). I wont use the GP adjustable mount unless you guys suggest otherwise.
2) The LiFe battery will go into the tail to balance the airplane.
3) I will also be putting in 2 3/4" foam wheels from Dubro
4) I am considering replacing the stock aluminium 15mm dia wing tube with a CF tube if I can find it.

There is little more in the airplane to lighten

Ameyam