Aye Andy,
How the devils are you old chap? Hot weather up here in the hill station and more forecast for the rest of the weekend in the Lothian Lowlands!
Herman and the Funday both played this nasty trick and both had the small drain hole behind the filler cap bunged up with ****! Inflate the pipes, place end of chanter into hole and play pibroch for a short while!
Something like 'Cameron's lament of Mexico!'
Should sort that bit out. The other bit you describe may require a new bladder or 'O'ring, rather than a hapeth o' tar!
Toodle pip, heliograph calls, 'Agent monocilindrico'
