For those with aerosharp or inspire inverter boxes that they got the transformers from, you can also use the heat sink like this.
1.get hold of a power saw that is bench mounted preferably.
2. get a new 60 tooth blade ( tungsten carbide teeth mine is 250mm or thereabouts)
3. spray the fins and all over the cutting area with CRC etc.
4.measure the center and cut it in half longitudinally.
5. cut again to get room for the capacitors.
Like this
and this
Then if you have the clockman board, it looks like this
and this
etc...
...........oztules