Should not need forcing. Was the fame new? if so, the thread myth need a tap running through it to glean out paint etc.
If the frame is not new, has the thread been threaded or cross threaded? Again a tap will be the answer.
Obviously we are assuming you are screwing it the correct way. (italian thread is both clockwise, english thread has one side screwed in anticlockwise, I forget which).
Should not need forcing. Was the fame new? if so, the thread myth need a tap running through it to glean out paint etc.
If the frame is not new, has the thread been threaded or cross threaded? Again a tap will be the answer.
Obviously we are assuming you are screwing it the correct way. (italian thread is both clockwise, english thread has one side screwed in anticlockwise, I forget which).