a stick post is a posted sticked on top so it never goes out of top listed threads.
try groovy and match some keywords.
Now, since i did the same mistake by ordering a wrong HD fro my other TR3A they let me return it which cost me just the return postage. I did it via worldspan in UK.
i do not thing you can fit any kind of adapter from toshiba to hitachi and VS in a TR series.