Re: Gunson Eezibleed on tandem m/c
Works fine on the brake m/c on my TR6, which is what I think you mean by a tandem system. The top of the divider between front & back sections of the reservoir is at the base of the filler neck, and I keep it topped up to that level. I guess fluid replenishes both sections at once by overflowing the divider.
As far as caps are concerned, I adapted the m/c filler cap. I removed (temporarily) the snap-in piece inside, and drilled a hole the right size for the threaded end on the EB hose. A couple of fibre washers & the nut, and you're in business, although it does take care to achieve an airtight seal. When I've done bleeding, I remove the hose, put in a blanking plug with breather hole in the centre of the filler cap, and replace the snap-in piece. Back to normal.
John