Tappy gti

[Niall]

Right went to do my cambelt today. Locked off the bottom pulley. Went to lock off the cams but could only lock the inlet. The exhaust was about 1mm out from getting the timing pin in. Not too much of a problem as I know most petrol engines will run happily out slightly......then I remembered how bloody close the gti valves are!

I still did the belt and timed it up correctly but on start up I now have a louder tap (not chronic like a lot of the videos I've seen).
The car always tapped ever so slightly and disappeared slightly when warm but now it's definitely louder. I didn't get a chance to drive it to get it up to twmp as it was still up on stands for various other things but I think I have bought/caused a tapper. It's definitely all timed up correctly and still runs as sweet as ever.

I'm going to go to pig on Wednesday and buy some oil and a filter and do that as I have read that the wrong oil can cause a tap but I think I know in the back of my mind that this is belt troubles.

After that long winded story, my simple question is, how long can a tapper happily live on? Is it something that needs repairing in 100 miles or can I leave it for a bit because ive pretty much resigned my self to the fact I'm going to buy and refurb a new head for it.