Spider gears worn?, What do they sound like? Options

[nine9three]

The transmission was out and we replaced three syncro rings and 1st gear dog teeth. The ring and pinion looked great with very little wear. The spider gears though were very shinny. They looked worn, but no broken teeth. Buttoned everything up and now I have noise. It is not a R&P noise but a loud sshhhhhhhhhhh type of noise. I can not hear it very well in 1-3 gear with 4/5 being louder. Any thoughts? How long for new syncros to break in? I need quite a bit of tension against the shifter to get into gear. I bought the aftermarket syncros from the bird at only a slight discount from OEM.

[Dr Evil]

While the antiquated manual does say to measure the synchro rings, I have never done this and have had no regrets. However, some of the new ones you buy are very stiff and do make shifting hard. What can you do about this? You going to send back all "out of spec", too big bands? Buy from two manufacturers and compare? Perhaps. Pelican offers two brands and likes to call one a "race" type. I am still unclear as to what makes the ones "race" over the others. I do see that the new ones, all of the ones I have seen over the last few years, have been way stiff and larger than spec. They compress so overall dia is not an issue if they have enough give, but the wider dia plus the stiffness have caused headaches. I use good used ones whenever I can as they shift like butter, cause no issues, are cheaper, I already know they fit, etc.