if you have dry taps which are leaking, take out the bit that contains the cork and drop them in boiling water for a couple of minutes this will cause the corks to swell, dry and refit.
I learned the trick of soaking corks in petrol from the old boy who saved my aul green Nellie from the scrap heap many years ago, simple but very effective
Remember also when looking at adapters in a plumbing outlet or similar there are two pipe threads...BSP and BSPT..the latter having a tapered thread form.
For motorcycle applications the non tapered BSP type are used...Ian