Thanks for all the comments.
But I am not completely decrepid (yet)
A trapped nerve in the back is the cause of the problem, though its not a back problem I have - back hasnt given me problems since I got decent equipment starting with the CFR about 5 years ago.
Its just constant pain in my left shoulder and elbow areas, and constant pain tires you.
Thee problem is probably due to all the bumps I took in grass track racing back in the 70's (and I dont mean the 1870's before anyone starts).
Jim, I am going to van mount the Scorpion, so it will be used as the Prowler. Its not as powerful, but I can get a very good clean out of the Scorp, thanks to it and the cleaning fluids I use - mainly Nemesis/M-power.
Might take dereks advice and go for the maccies instaed of the subway.

and thanks Robert for the advice. Do you think a sports physio may be of help.
With my doctor its eother the pills or the scalpel.
