Hi,
so these are the tools that help me out,
1- Electric drill
2- Set of easy out (steel special screw driver set that is Anti-Clock wise)
3- Small Hummer
use the elctric drill to widen the original bolts heads, from the easy out set select the one with almost same size (tip of the easy out is just the size of the widen bolt) use the hummer to insert is by force - not to harsh thought. be very carefull !! using a typicall wrench start to move the easy out tool anti-clock wise - the easy out will be tightining inside the original bolt thus un-screwing it.
us need to replace both original screws after this operation and replace them with the same size and measure.
mine i have cleaned the lock and straighten the originial key and everything works like a charm now - Regadrs,
OOZOO