You just have not gone far enough. You still have old yellowed shellac on the bed. You have not damaged anything. Take some alcohol and oil and cont the process. You can use shellac with linseed oil if you like but it will be slower. The last process is to french polish with shellac and a very little linseed oil. You just have not yet blended the old shellac with the new yet. Use a soft rag and go in circles and then straight lines. The scratches are from to heavy a hand. This takes a while to do and is not a quick process.
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