How do i set default tab measurements that will work with ctrl + M

[Rob4077]

I have set my default tab stops at 0.5 and my indentation to hanging at 0.25.

The first time I press ctrl + M it works perfectly, setting the left indentation at 0.5 cm.

If I press ctrl + M a second time, the left indentation gets sets to 0.6cm, instead of the expected 1.o cm.

If I press ctrl +M again I get a left indentation of 0.85cm.

It is only when I press ctrl +M again that I get to a 1cm indent. 

The hanging indent works perfectly.

Is there any way to set it so that every time I press ctrl + M it increased the indent by 0.5cm. instead of these seemingly random values?

[#2]

@Rob4077 I believe that you probably have tab stops set as shown below

If you access the Tabs dialog and click on Clear All, do you then get the expected behaviour

[#3]

@Doug_Robbins_Word_MVP 

Thanks for the suggestion, but here's what I have as my default. That said, it now seems to work as expected. Must have needed to sleep on it. Thanks for taking the time to reply