front spring shakle

[jiw1]

i am in the process of reasembling my 46 front axle.i did a search but could not find a way to install the top shackle pin to the the radius bar.i did clean the hole with a brake cylinder hone to help insert the new shackle pin but still to tight.i did not want to drive it in until i know if this is the proper way.i have thoughts of freezing the pin in dry ice or freezer to shrink the pin with hopes of it sliding right in.i did purchase new shackles,bushings and pins. any suggestions are welcome.thanks again