Engine damage or not after clutch disaster?

[benuk]

Hi guys,
You may remember I posted last year after my clutch destroyed itself, taking part of the crankcase with it.
(post : http://www.apriliaforum.com/forums/s...y-clutch/page3 )

At the time, my solution was to buy a crashed falco and put its engine in my bike. Turned out to be a good deal since after selling off all the parts from the crashed bike I ended up making a profit so no complaining
However, I still have my original engine and want to pick your brains about repairing it.

The engine was working absolutely fine when the dealer opened it by removing the whole clutch crankcase cover because of the clutch noise. It was the dealer who told me to change the engine because of the bit of crankcase that fell out & the shards of ground aluminium crankcase that were lying in the oil.

It turned out the broken bit of crankcase only came from the crankcase COVER and not the actual crankcase, which is why i realised the engine could maybe be easily repaired.



I've bought
- new crankcase cover
- gasket
- new full clutch / basket assembly
I'll also need to replace a couple of bolts that had their heads damaged, the water pump gear and check the oil pump.

I'm not worried about the gearbox anymore since I managed to put the jigsaw of broken parts back together and confirm no chunks of metal could have been lost in there!

Anyways, the opinion I need from you is:
The shards of ground metal that were in the oil around the clutch area : could some of these have been sent around the engine and ended up in bearings etc, meaning i should just sell it for parts (since i'm not competent to open it up completely and fix it)? Or does ALL of the oil coming out of the pump go through the filter before being distributed through the engine? If that's the case, then i would be perfectly confident the filter would have caught any tiny bits.
I've looked at the diagram of the oil pump but can't work out if all the oil goes through the filter first or if some of it is pumped directly into bearings without going through the filter.
diagram :


So, answers please?!!!
cheers
Ben