Tks Guys - your collected wisdom and advice is priceless & very much appreciated.
Joe - OK will try the "back off by 1/8 turn method" and see how I go.
Joe, Grumpy & Deejay - As I mentioned earlier in my thread - I know nothing about relief grinds - so your inputs, viz:
"..taking a rediculous amount of metal off the reel...",
"...the reel blades are consumed more quickly with relief grinding.." &
"...I have discussed this issue with many greenskeepers, and none of them advocate 'relief grinding'..."
are all very good points on relief grinds - so I will be avoiding that too.
P/S Just got a note from Council telling me that they just about to dig up all my nature strip for some drainage work. Last time they did something like that they left the grass full of what they called "crusher dust" - but what it really was, was a sort of fine road base full of 3/16 gravel - I must have done something to upset the "Lawn Gods"