Hi Yardboss,
I think CA is a good way for gluing metal parts on plastic. I use in a few cases CA in a gel consistency, so you have a short time for correcting the positions of gluing parts. If you use liquid CA, use it sparingly and if glue is overflowing to sides of parts so you should take a soaking paper immedialtelly taking up all the glue that is outside of parts. With removing of the overflowing glue you 'll get a very fast time for drying and hardening.
In all cases you should clean parts before glueing and especially if have done a mistake with your first attempt, you must remove all old glue from parts. I this case I use grinding paper or also graters or a fine file. Many success!!
Bernhard