grumpy, mebbe ebay could assist you with locating your old user, wouldnt matter if its a different email addy as long as its the same IPS.

& a second account is a sensible idea, the 30 feedback ID could be used for selling if it included any selling, which would alleviate any concerns you have about buyer confidence.

If not; buyers would know if your new account was only used for buying, building a FB score thru buying wont help with buyer confidence,imo.

and if you did some selling years go on the other acc., you could add something in your description - just a fresh ID.. im an experienced ebayer...buy with confidence. 

i' use this ID for posting and buying, Recently a opened a fresh account for selling only and had no trouble with sales (woulda liked more of course), depends if your items are in demand...offered at a reasonable start price...and with a minimal P/H charge