I bought a new adjustable pushrod and a dual master cylinder for use on my 65 Mustang... the pushrod has a small spring retainer on the end of it, When I inserted the rod into the master cylinder, and I figured that it would "clip" or "lock" into place and held into the MC by the retainer. However, the retainer only provides some resistance when sliding the rod into the MC, and does not actually lock in place. Is this correct?, or should the MC pushrod actually be held into the MC by the clip? Thanks!