You could definitely put a shorter stem on there for now. Might also consider selling the frameset only - that 7800 Dura Ace is great stuff.
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"The older you do get, the more rules they're gonna try to get you to follow. You just gotta keep livin', man, L-I-V-I-N." - Wooderson
'14 carbon Synapse - '12 CAAD 10 5 - '99 Gary Fisher Big Sur