My recently acquired No. 1 proof press (#3639) is an older version sans grippers.
The previous owner fashioned a hinged tympan on the bed which I believe was used for registration. He had taped on makeready with gauge pins to the underside of this tympan at one point. However, the press has not been used in about 10 years so I found his system in some disrepair.
I would appreciate any feedback on registration methods for a No. 1 and/or if this hinged tympan system sounds reasonable. Thanks!