left aligned tempo markings different over multimeasure rests

[Paul Scott]

version 2,21,2

When creating a score and parts I have not found a reliable way to cause 
markup like tempo indications to always appear at the left side of a 
measure even when a particular part has a multimeasure rest at that 
location. 

s1*0^\markup and \tempo and left-align don't consistently produce 
attractive results.  What are any of you doing to solve this?

Thanks,

Paul Scott