I got my housing and the strobe today. First thing I did was buy new o-rings. There must have been half a tube of lubricant on the existing ones. I took them out and washed them then re-lubbed. Glad I ordered new ones since these seem to have started taking a set and have a couple dings where looks like a knife or screwdriver were used to get them out. The housing was almost glued shut from the silicone. Are there any special tips or common problems with this housing? My PT-016 has been great. Gonna use it as a backup since the strobe should work with it also. (has a fiber optic cable that goes over the flash.) Really gonna miss the compactness of the PT-016. This new one is HUGE in comparison. Is the balance weight worth the purchase? I didn't use one on my old one. I kept it clipped to my bc and liked it that when I let it go it would float up to my right shoulder.