Well, I was wondering which block gaurd is better and easiest to put in? Golden Eagle, Str, or one you may recommend. I am looking for one which may be pushed in easily by hand with a little filing and barely any force used to get it in. Excessive force will distort the cylinder walls if hit in with a rubber mallet or force it in somehow. Am I correct? If, by any means you have to weld it in and have it put in by a machine shop. How much did you have that done for and what place? Thank you for your time.