I don't think that it's the HT leads, cos when I took the sparks out and held them against the earth they all had the same size spark.
![](./images/smilies/spacer.gif)
Plus, the engine still ran as I tested each plug.
![](./images/smilies/spacer.gif)
Looking around on eBay for a compression gauge atm, will have to go from there once I get hold of one I guess
![Confused :?](./images/smilies/icon_confused.gif)