marden, I'm not. I deal with the core 1st. Well not exactly. I make the eye marks about 18"+ up from the end of the rope, this gives me plenty of core to work with. In fact I'm tapering the core twice. I set every thing up, to get a good idea of where to start the core bury. Once I have that, I remove 1/2 the core strands, but don't cut them. Then from the end of the core I take another 1/2 of the remaining strands but I do cut these. I run my fid in and where it comes out near the cross over I open up the cover a little with the snap ring pliers. Not a alot just a little.
After that I do the cover taper and bury. It's not very tiddy but works very well for me. I then bury the core 6" + and trim the core taper tails right before they enter. When the core pops out from the bury it leave me a long tail, that I can wrap around my hand. The next step is to smooth every thing out, take the slack out of the cover in the eye.. This may require pulling in reverse on the core bury. This pulling in reverse helps with the taper tails laying true, and the cover puckering or inverting at the x over. Next I mark where the core exits the bury (just a guide mark) then I pull as much core out as I can,( or until I see where I started the taper), and continue tapering long and thin to about 1/2" short of my mark.
I then equalize every thing again while I finish the core bury starting at the x over. This takes time, and some effort. I then finish the cover taper the same and untie my keeper on the tail exiting the core, and smooth out the cross over.
The next step it to lube up, and run it home. I feel that I can do an eye in about 2 hours may be 3. Thats with a 6 year old hiding dad's fid, scissors, tape, and what ever he can sneak off.