Bear TD limb reduction

[Gun]

I have a pair of gainsville #1 limbs given to me by a friend. They are marked 60# on a B riser which is what I use. After 3 yrs of severe nerve damage to my right side (shoulder, arm, hand and fingers) I am now a lefty. I am currently shooting 50# limbs which are 47# at my draw. They are easy for me to pull. I would like to take 5# off the 60# limbs and try them out. I did pull back 58# (#3 limbs) on a A riser but was straining.
Any ideas how to do this with limited skills but a pretty nice belt sander?
Thanks for any help.

[Mad Max]

1st thing, do not use a belt sander
Trapping the limbs I think will be  the best way.
Some of the other guys know more about trapping than me
Someone will chime in.

[Jack Denbow]

Gun, contact Jeff Springer (tippit) on here. He is like a lot of us with a lot of bows he can't shoot anymore. He has more bows than Bear Archery and Black Widow combined and has reduced the weight on a lot of them. He has reduced a lot of weight on some of them. You will probably find him on the knife making page.
Jack

[bjansen]

I have to do the same thing in the coming weeks.  Here is what I would suggest

1.  Take some 2" masking tape and cover the back side of the limbs (i.e. side that faces the target)
2.  Scribe a mark along the limbs on both sides all the way down the limbs (maybe start at 1/8" from the edge on both sides). 
3. I would then use a course file, or fine rasp and connect that line you just scrived to the belly glass - be careful to file down on the back glass as to not lift strands of it. This is the "trapping" - you are making a trapezoidal limb cross section. 
4. Take some 100 grit (or so) sand paper and put it around a small block of wood and sand those file marks out, then take it to 220 grit. 
5. Then using your 220 paper, focus on rounding the corners of the sharp edges you made on the back of the glass. 
6.  Remove the tape by pulling it from the center out to the tips (less likely to lift a glass strand).
7.  Check your poundage and tiller, and then round the edges more to remove more weight if needed....if you are not even close then go back to step 1 and trap some more. 

[Gun]

Well just an update for myself mostly, Ha
I sent these to Jack Kempf. He didnt want to do them. Says he only dies his own stuff incase he wrecks someone else.. I told him not to worry as the were given to me. Marked as 60#
Two weeks later Jack calls and says theyre 50# not 60. So after some discussion I got them back and checked them w my scale. They are actually 55# @ 28" and 51# at my draw of 27"
Good enough for me and zips an arrow pretty good