I guess that the rest of us are rather perplexed by your question and asking ourselves, Why? I am not familiar with the Spheros reel and the Shimano site is not helpfull as far as noting the position of the drags but most spinners the drag washers are very easy to replace and I don't think that this reel presents any real problems in drag replacement.
Just buy the reel and then buy the carbontex drag washers from Smooth Drags and install them yourself. The drag washers replacement does not require any disassembly except removing the spool and probably taking off a wire retainer to access the drags.
Here is the website for Smooth Drags and the cost is listed as $8 for the set of three washers. Seems rather simple.
Pricing Information, SMOoOTH DRAG *** Can Stop Anything *** Toll Free: 888-206-4656
Just schroll down until you find the part listed under carbontex. Hope this helps you.