you can use a seat binder bolt (the bolt that goes through the frame) and a recess brake bolt iirc. Looks more like a 1E but those smooth 1A bolts are nigh on impossible to find....
@Tel started
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you can use a seat binder bolt (the bolt that goes through the frame) and a recess brake bolt iirc. Looks more like a 1E but those smooth 1A bolts are nigh on impossible to find....