My 1993 2+2 TT auto has done a bit of hibernating over recent months, as have many of us. I run it every 3 or 4 weeks and give it some road exercise every month or so. Yesterday I took it out for some road work and the brakes acted very strangely. When I applied the brakes steadily just to slow down, the power unit applied them very hard then very slowly the pedal lifted back to normal. In the end I was helping the pedal back myself by putting my foot under it and lifting. Thirty minute drive, no change. All technically competent opinions on the cause, and the fix will be greatly appreciated.