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Hey- I can't get the groudon on 4th gen because I just started a new game and am trying to abuse my ID/SID combo.
I can give you the eevee, and maybe have one credit with you for later?
I haven't done it in a good bit, but I think I've figured how to get my eggs right. My last successful try was done by collecting at frame 12 to collect a frame 13 egg.