here the latest
http://pages.ebay.com.au/help/policies/rfe-spam-non-ebay-sale.html.                     
Paul
Thanks your question.  Your question really got me 
thinking.
Since then I have tracked Beatle Bailey down.  You are 100% 
correct on the
Suzuki component.  He was offered a full sponsorship deal, 
was given use of
6 bikes, was allocated a full-time mechanic and $.  
Riding for Suzuki or
close thereafter he broke his leg on 3 
occasions.
I can confirm again from speaking with Beatle that he was 
actually riding
125 and 250's of his own, in fact at the time John Harris 
imported the race
motor from Pele Granquist and put it in a Husky 125 for 
Beatle and Beatle
won a couple of state titles with it.  As a Husky rider 
John Harris was
wanting to give Beatle bikes to use.
Beatle was a good 
mate with Phil Lovett and based on his success, Vince
Tresario (Mr 
Motocross promoter) offered a wild card entry in to the Mr
Motocross 
series at Amaroo Raceway for Beatle to race against the like of
Stephen 
Gall and Anthony Gunther.
As a wild card entry in a pack of 40 riders he 
was forced to start in the
second row and each of the race's made his way 
up to about 4th.  For the
Wild Card event into Mr Motocross John Harris 
built the bike especially for
the races.  He vaguely remembers a 420 , but 
could not 100% confirm - as an
18 Yr old he was more interested in the 
race.
He mentioned that at the time it was common for the frames and 
motors to be
swapped particularly between the 250 and 390's.
To be 100% 
clear and to fair to Beatle Bailey, he has not confirmed that
this is his 
bike as he has not seen it.  Beattle has however confirmed that
he rode 
Husky's prior to John Harris Motorcycles and John Harris
Motorcycles built 
Beatle a Husky (390 or 420) for the wild card entry into
the Mr Motocross 
round at Amaroo.  He also confirmed that 250 flywheel
being put on was 
done and that the bike had a black race tank.
Both of our sources are 
correct, mine probably a little better 

Hope this 
helps