i wrote all that then you said 1G.. i was thinking it was a 2g. i know all about the 2G's and 1G's ive done a shit tons of engine builds in each. Now as far as the master and slave on a 1g i really could be 100% sure that they are the same. I would be really surprised if they are different. I think the only difference they could have if any is the plunger on the slave might be a lil longer. So you should be able to use the pin from one to the other. A lil sqeeky might and should mean that the seals are is good shape. Just because its not leaking does not mean its not bad. It simply might just not be building allot of pressure and pushing back to the reservoir.