You still didn't say what settings you tried (or what spring you're using for that matter). If you tried the SC suggestions you'd be using about 60-70% of your weight for air pressure, try less (but not necessarily 50 psi at your weight, recommended range is 50-70% so try 90 psi). Otherwise I'd say that the more plush you make it you'll get less use of the stable platform valving, but maybe that's what you want. Increasing the air volume can also give you a plusher ride. I like it somewhat firm for climbing, so I run 125 or so for general xc riding, then change it to 100 for extended downhilling. (I'm 185 on a large Heckler with a 350lb spring). Otherwise I approximate the recommended SC settings for the most part. I ride all kinds of xc mostly, but long days at Downieville or a ski resort then I prefer to go plusher as I'm not climbing much.