Agreed about the painful part - the flooding kinda did me a good service though because the bluey/green premix started seeping out of a leak in the crankcase join where the useless blue hylomar had been eaten away by the fuel - plainly revealing the problem to me. I've since been using Threebond 1207B due to Matt@Tyga's recommendation. Its dear but its nicer to work with and withstands solvents far better than hylomar - which comes straight off with a dab of acetone, whereas the 1207B laughs in acetone's face and only comes off with Threebond's own gasket remover, which is HARSH stuff.
I thought i got my new tap from Tyga but i can't find it in my order history so maybe i got it from econohonda in Te Aroha. They have a stock list pdf file on their site that you can match part numbers against to see if they have what you want. http://www.econohonda.co.nz/ They probably have a few.
Normal MC21/28 taps are still available and tyga (for example) stock them at $90NZ but you have shipping on top of that.
If you try to order one from a Honda dealer like city Honda in Palmy, then yeah, the price is either ridiculous or they can't get it for some reason... But that's all due to the NZ wholesaler (Bluewing Honda) setting super high prices for everything and being generally dissapointing to deal with.
I've dealt with econohonda a few times now and they're pretty good, and you can always fall back on Tyga if you can justify the shipping cost by buying several other items at the same time. As i always try to do.
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After years of moaning about immigrants now i am one...