Remove Trap Help Please

Hi All

I've been reading old guides (circa 2014) on Remove Trap and everyone suggests raising this skill to above 80 by macroing on the gold box at the jewlers by the West Brit Bank. I'm currently at 51 and have tried this but I seem to disarm the trap easily and then it doesn't respawn for what seems like ages (I've left the macro on and come back two hours later with no gain.) Did they change the spawn timers for traps at some point? Has anyone else had this issue?

I have access to a GM Tinkerer which will be able to get me from 80+ but I'm not sure what to do in the interim other than create another character and raise Remove Trap along with their Tinkering. I thought I'd post here before spending that time and resources. Is there anywhere else I can macro this skill to 80? Thanks in advance for any help.
 
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