Hello Keith.
I have a 200p, big girl isn't she? I replaced the Focuser on mine with a Baader Steeltrack. Not trying to be insulting but compared to the Crayford the Baader is far Superior. It makes the original feel like it was made in the dark, out of old horseshoes by Stevie Wonder. 2" Eyepieces are more expensive than 1.25" obviously but worth it in an 2" Tube. Send Skywatcher an email regarding cleaning the Mirror as they are coated and easily ruined. Send me a pic of the missing screws, or rather a pic of the bottom of the Tube and I'll send you a link of where you can get replacements.