Valve train noise

I took my driver's side rocker gear off to have a close look at the shaft condition and found slight galling on a couple of rockers. I didn't like what I saw! Sorry I didn't take any pics. This was the supposedly noisier side but I doubt it was the problem. Anyway I took the passenger side off aswell thinking that it had started too but was all clean. I took all the gear down to my local machine shop and he advised it wasn't all that bad. He suggested to linish the shafts and hone my rockers to smooth out the galled suface. I took them yesterdsy and picked them up today. I was very surprised! The shafts are mirror finish and I couldn't tell between the one that had damage and the other. As far as the two galled rockers they were honed and whilst honing they were slightly out of round. He honed all the rockers as they had some degree of out of round. Now they are perfectly round and slide on the shaft like silk. I will start from scratch now and reassemble the rocker gear with the proper side play and preload. I hope this fixes the problem.
Regards
Billy D...
P.S. I think side play plays a big role which I never looked into when assembling the rocker gear in the past...