Ric strings?

Anyone use Rickenbacker strings or the same gauge recommended by Ric?

My beautiful new to me has new Ric strings installed by the previous owner in 45 - 55 - 75 - 105.

The nut slots needs filed & I'd ultimately like to use 40 - 60 - 80 - 100 Labella nickel roundwounds.

Anyone love the recommended gauge?
 
I use something close: Progressives in 45-60-80-105 on my 4002 (yes, "2," not "1" or "3"), and have done so for over twenty years, changing out occasionally, then coming back. To me, they are more balanced than "conventional" sets, because RIC sets the polepieces in an arc to match the crown radius, so the D and A strings do not have to be heavier gauge to induce a balanced signal.

Don't worry about filing the nut slots. Because the strings offset over the nut to the tuning machines, 5 thou is not any big deal to adjust the nut, and is not such a large item that a person can still go back to the stock strings when desired.
 
They feel like nice strings, & surprisingly stiff. I read somewhere that they're made by SIT strings?

To be honest I'm not sure who makes them. I'm still on my Rick string quest! So many strings sound good on this bass it's hard to decide what I like best. I'm switching strings pretty much weekly. I got a set of Rotosounds on the way to try. Haven't tried those in probably 10 years or so. I don't get overly concerned with gauge. I also installed a zeroglide zerofret on my Rick. The open string sounds like a fretted note now, plus I won't have to concern myself with filing nuts anymore. I'm not so sure you will have to make the slots wider to accept most other strings within reason of course. I know most Ricks come with very high slots which can use some good nut files to get the depth right. Your .40-.60-.80-.100 strings should fit without issue however.