The old tmap section for stratics is for posterity only. They switched how maps worked a couple of years ago and now the maps are at random locations. You need to get yourself either ultima mapper or cartographer to find the locations easier. You can get cartographer from a link on this page
UOAM, UOCartographer, EC Tips, SA Map Links and UOTH Here! | Stratics Forums and you can find ultima mapper here
Ultima Mapper | Player Tracking Refined
If you are using the classic client, then you need UOAssist from here (UO Assist link won't stay when I hit submit so go to tugsoft.com and it will come up that way, sorry I cannot link it for some reason.)
You do not need to have a paid version, the trial will work even when the trial is over. I would suggest doing the Enhanced Client for maps. You will need Pinco's UI from here
Pinco's UI | Stratics Forums With Pinco's you can enlarge the treasure map and then compare it to cart or uomapper to find the location. I run my thunter without mining and it rarely takes me more than a minute to find the treasure location and dig it up. I hope this helps.