In a message dated 6/29/02 2:04:51 PM, bgranowitz@hotmail.com writes: << What portable toilet fits properly in the M15? I was told a Thetford #35 would, I bought a #135, but it doesn't. Thanks, Brian >> Brian, I am guessing that you have an earlier model M15. The 135 fits my 1991 perfectly, but others on this list have indicated that it is slightly too big/tight on earlier models (I am not sure exactly when the liner pan was changed). Unfortunately, the head supplied as OEM on earlier boats is no longer available. The good news is that a few people with earlier boats have taken a hair dryer/heat gun to the Thetford 135 and "changed the part number a little" to make it fit (heated the plastic carefully, and then immediately placed in the pan to conform while the plastic was hot and pliable). Perhaps someone who has actually done this modification will chime in. Scott Grometer M15 #478 "bebe"