I have a 9 year old Cannondale hybrid with a SRAM X-4 Trigger Shifter. Been having shifting issues so I wanted to change the cables. I was able to remove the cables without issues but I can't seem to put the new cable into the shifter. It somehow gets stuck in the middle. I can't see it coming out the other end. Is there a trick to feeding the cable through? The manual makes it seem very easy - "just feed the cable through" yeah right!

Any help is appreciated. Not sure if the shifter is somehow broken and I may just need to buy a new one