well i was havin major problems with keepin tire pressure in both tires recently, so i pulled out the ol soapy water, and couldn't really find anything. so i just changed out both valve stem cores and problem on both tires went away. i'd air up go riding check again after riding(warm) and be 2-3 lbs less. there was no such thing as trustin the front tire for a bit lol, so i took some rebound damping out(go a further left of the bell curve) and man she felt brand new, so i couldn't help myself to squid down I-680 lol.