Adding a seat
Make sure you use 2 part glue, you must clean/prime both the tube and new mount to be glued, (google prime pvc before glue) very lightly draw around your new mounts with biro before you glue (the biro will come off if cleaned straight after gluing with pvc cleaner or nail varnish remover) after marking the location of the mounts and pre glue cleaning/priming apply a coat of glue to both surfaces that you want to glue together and then LET that glue on those surfaces dry, once fully dry then apply a second coat to both surfaces, when both are tacky press together and hold for as long as you can (15 mins at least) continuously smooth out the new mount on the tube from the centre out, if possible use a roller to do this.
__________________
|