I am overhauling a almost new early 80's Takara 12-speed. I took off the crankarm, and now want to disassemble the bb to clean and lube. (see picture below) #3 is the spindle, but is #2 the lockring and #1 the adjusting cup? Do I need a special tool like a Park Pin Spanner SPA-1 or does someone have a homegrown solution? Thanks for any advice!