Welcome back Peter , missed you .
On the Lunt , I see the aperture thing is happening here ,,,, you dont need 60-100mm 's because the sun is plenty bright enough , for sure
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You dont need 60-100mm's because you are viewing during the day , and what 's the buzz ? .. a smaller aperture cuts thru the bad seeing like a knife , and it dont get any worse than 10am in the morning , now don't it ??
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I can see plenty with my 40mm SolarMax all day long by tuning for either surface or limb detail , its a trade off .
You can use a computer to squeeze the last bit of detail out of a Lunt 150mm Ha solar shot (s) $$$$$ , or enyoy seeing it
in real time , I like the latter thank you very much , especially a gianormous filiment over a few hours ,, sweet!! .
My 5c .
Brian.