Hi, just replaced my clogged heater core (Golf mk7 Tsi 1.8T) but the seals dont seem to be holding tight enough and are leaking coolant after putting back clamps (tightly) or original clip. Any tips on how to reclose and get that seal working again? I've read somewhere about 'glazing the seal' but not sure what that means. Tnx for any tips.
watching this video helped resolve my problem here.