[grbrown]

Andy,

I haven't found DOT5 to be any more difficult to use. If you have air in the system, it will naturally rise to the highest spot in the system. So having done your best, consider ways you can persuade the silly bubbles to find their way into the reservoir, hence out of the system.

I assume you have a single disc, in which case this shouldn't be too difficult, as you should also have a single run of pipe between the reservoir and calliper. I have faffed around enough in the past on my FX, so can sympathise!

Start at the calliper. Make sure the pipe fitting is at the top of the calliper. If need be, undo the fixing bolts to achieve this and tap the calliper and pipe with a screwdriver handle or something, the purpose being to dislodge any bubbles inside. Tap the pipe along its length, when the majority of any trapped air should be at the top of the pipe. Any interim pipe fixings are candidates for air bubbles.

Turn the handlebars and/or reservoir, to ensure the reservoir is the highest point. Gently and repeatedly apply the brake lever, which should admit air from the pipe into the reservoir. If there is as much as you indicate, this will be noticeable. You may need to top up the fluid level.

Restore everything you've disturbed and hopefully the brake should be improved. If it is safe to ride, do so along as bumpy a road as you can, when any other trapped air will be dislodged upwards and repeat as before, to get it out of the system.

Hope that helps. You've brought back distant and not entirely pleasant memories! Let me know when you are going to tackle the back brake and I will leave the country....