Hi Benjamin.
ZK-TCH was sold to Robert Foley in Wellington around 30 years ago, however he has just sold it back to me and I will be completing it to fly, hopefully later this year. It is a BD5-B with a turbo Honda engine.
We have just replace the old radiator with a new aluminum one and are having problems with starting (as the engine was rebuilt a couple of years ago, we think the compression has gone up and is very hard to turn over) so we are looking at upgrading the battery to a 14.2V Lithium battery.
As the TCH rego has expired we will be re-registering.
We will keep the forum updated as we progress.
Cheer Peter Sheehan