Thanks for your response. Fair point. It's just 26" wheels (with arguably rather large tires). I have no intention to ever go to smaller wheels. I went 5mm higher than what I measured the Alfonso to have (20mm drop), to nudge it into a direction of having more ground clearance. I almost certainly do not want to put it lower than my current frame (as that height has never posed a problem in terms of ride comfort and if anything ground clearance could be larger), but could leave it untouched to be on the safe side. I understand that there are even straight dirt jump frames out there with only 14mm drop (I found that to be the case for the NS Bike Decade). I believe street trials frames (also 26") are in a different ballpark still, with -20mm or so (i.e., BB above axle line; and with that much higher).