We've all "cut the wrong side of the line" before. Without a picture its difficult to say how it looks.
Do you get too much light coming out from under it so that it looks noticeable? Perhaps find a nice draught excluder to mount on the door?
In any case, its how it looks to you, as I...
Speaking as a DIYer (not a professional) I'd rub down with high value grit sandpaper (180 or above depending on the surface) just enough to take the shine off the surface and give the paint something to key to.
Most undercoats nowadays are combined "primer/undercoat" (and mostly non-solvent...
Sorry I wasnt clear. I do indeed mean the slope of the waste pipe.
It should have only a slight slope i.e. a drop of 1cm every 23 cm of pipe (ish!). but as you say, if its stuck in the wall then there isnt a lot you can do... In any case, if it works then it works! :) (bar the drip that is) :P
Tom
I would imagine that you've hit the nail on the head with your second post.
If you've used the offset to increase the height of the waste then, after you flush, there will most likely be water trapped in the waste pipe.
When you remove the toilet from the offset connector does water...