I am often in that boat Boabski, I am currently 9 h/c not so long ago 7 and a number of yrs earlier playing better than that but I have assumed the years and the MS have taken their toll on my game to some degree but the consistancy problem remains. I am probably as frustrated as you, Its a real pain to start a round feeling great only to realise that during the night some joker put your hands on back to front.

Practice before a game can sometimes annoy me too, have you ever taken all your practice shots, even a few practice holes before a comp and thought....'Im up for this comp'? Then feeling good you go off the first tee and wonder who secretly drugged you

I have played for 30yrs on and off and still dont have the answer.