fidgit drilling holes in a frame is not hazardous at all. Look at any frame or structure member...holes are common and do not limit the capacity of the frame. Unless of course the holes are waaay oversized. Self tapping screws would, in my opinion, do nothing worth noteing to a frame.
Big Jim <img src="/forums/images/graemlins/pfft.gif" alt="" />


professional bovine relocation specialist