Provo Craft/Zision Paper Trimmer Blades --- Grrr

So, I have this cutter: (Sorry for the link, but it's not in the SuperStore.)

http://shop.hobbylobby.com/products/zision-paper-trimmer-573923/

Actually, I have its Cricut cousin, too.

Bought the replacement blades which are a scoring blade on one side and a cutting blade on the other.

I can't figure out how to snap the blade piece, with the cutting side out, into the housing. The scoring side goes in, no problem, but not the other way. The blade is very loose inside the housing and when I pop it in the trimmer arm, it flies out. Help!

(And I'm ok if you're answer is throw it out the window and get a different trimmer, but I didn't want to go that route unless absolutely necessary.)

Thanks!

I have that trimmer (among others) but I'm not understanding which refill you have for it. All refills I've ever purchased for it are separate cutting and scoring units that have to be completely switched out.

Can you link the refill too?

Unfortunately no. I'll see if I can get a good pic of the blade itself.

I believe you may have bought the incorrect replacement blade.

Ugh, you are right! I didn't even notice there were two different blades available.

Bought the cutting blade and all is right with the world. Whew!!