I am trying to change saddles on my guru cronalu. The existing saddle had the hole in the middle (selle italia c2 trans am). Anyway, one of the bolts to loosen/tighten can only be accessed from the top of the seat post, so you had to put the allen wrench through the hole in the seat to loosen/tighten. Now I am putting an arione on the bike, how do I tighten the clamp back since I cannot go through the top of the saddle?