I have 2004 ktm 105sx and since i have had it never been able to bleed front brake. I took it to the shop and they did but it didnt work great. Recently got new brake line and a new piston for the front master cylinder. Wont bleed the regular way but used a vacuum kit and it kinda started. Then teflon taped the bleed screw. Started working and building pressure but leaking slowly from caliper. I think its the bleed screw but I cant be sure. Is it the whole caliper? Ugh...what next?