Power Cable Question...

My first post on Audiogon, thanks for any input. Just got the PS Audio Trio C100 amp and a Cambridge entry level cdp. Today I wanted to upgrade the stock power cables. I've tried plugging in 3 different models, PS Audio Jewel/PW AC-3/Pangea all 3 I can't get plugged in to either component. The force needed to set the plugs in flush on the units have me scared of actually breaking something. Is it the models I have? Or am I missing something?
Forgive any newbie mistakes, this is my first attempt at putting together a "hi-fi". If anyone knows of a relatively cheap Power Cord that would easily plug into these two units please advise. Thanks.