My best advice is to go on Muv's blog and read everything - also she has videos on the sticky
I had to tap one of the slide plates off on one of mine. Then I cleaned it real good and oiled it a little. It was full of lint. I used a hammer but I was pounding on an old wooden spool. Not real hard - tap tap tap.
Once you get it working you will love it. I use a HC on one I have from sew-classic so your HC should work - try it anyway - as long as you have the motor mount on the machine you can do it.