Whilst stripping my Mk 1's interior, I have just taken out the seatbelt mounting near the sill on the driver's side and water poured out. I can only assume that because it has been standing outside for several years somehow water has got in. Is there a drain channel that could have got blocked? I'm a little averse to drilling the sills to let any excess water out so would appreciate any help on the matter.
Is there a drainage pipe/channel on a Mk 1, where is it and what's the best way to unblock it??