I was lightening my heavy hitters last night from my 62.5 grams (that I use for 3-6,000 feet) to something lighter to use for the McCall Idaho area. I'm not sure of the elevations encountered there but I'd guess 6-8,000 feet. I took a guess and lightened them to 57 grams. I used the 1" allen in the heel. A 3/8" steel with a steel washer in the mid, a 3/8 aluminum with an aluminum washer in the tip. I'm using the stock O/S/O primary too. In the secondary I'm at 80 degrees with the Yamaha silver spring and a Dalton 54/42 helix. Any suggestions? PB